/Engine/Source/Runtime/Slate/Public/Widgets/Text/SlateEditableTextLayout.h
Query to see if the text under the given position is currently selected
bool IsTextSelectedAt ( const [FGeometry](API\Runtime\SlateCore\Layout\FGeometry) & MyGeometry, const [UE::Slate::FDeprecateVector2DParameter](API\Runtime\SlateCore\Types\FDeprecateVector2DParameter) & ScreenSpacePosition ) const